Texas Instruments TI-34 II Teachers Guide - Page 5

© 1999 T

EXAS

I

NSTRUMENTS

I

NCORPORATED

TI

-

34

Û

: A Guide for Teachers

v

About the TI

.

34

Ü

Two-Line Display

The first line (entry line) displays an entry of

up to 88 digits (47 digits for stat or stored

operations entry line). Entries begin on the

left; those with more than 11 digits scroll to

the right. Press

!

and

"

to scroll the entry

line. Press

%

!

or

%

"

to move the

cursor immediately to the beginning or end of

the entry.

The second line (result line) displays a result

of up to 10 digits, plus a decimal point, a

negative sign, a “

x10

” indicator, and a

two-digit positive or negative exponent.

Results that exceed the digit limit are

displayed in scientific notation.

Display Indicators

Refer to Appendix B for a list of the display

indicators.

Order of Operations

The TI-34

Û

uses the Equation Operating

System (EOS

é

) to evaluate expressions. The

operation priorities are listed on the

transparency master in Chapter 4,

Order of

Operations and Parentheses

.

Because operations inside parentheses are

performed first, you can use

D

or

E

to

change the order of operations and,

therefore, change the result.

2nd Functions

Pressing

%

displays the

2nd

indicator, and

then accesses the

function printed above the

next key pressed. For example,

%

b

25

E

<

calculates the square root of 25 and

returns the result,

5

.

Menus

Certain TI

-

34

Û

keys display menus:

z

,

%

h

,

L

,

%

t

,

u

,

%

w

,

H

,

I

,

%

k

,

=

,

%

‚

and

%

±

.

Press

!

or

"

to move the cursor and

underline a menu item. To return to the

previous screen without selecting the item,

press

-

. To select a menu item:

•

Press

<

while the item is underlined,

or

•

For menu items followed by an argument

value (for example,

nPr

), enter the value

while the item is underlined. The item and

the argument value are displayed on the

previous screen.

Previous Entries

#

$

After an expression is evaluated, use

#

and

$

to scroll through previous entries,

which are stored in the TI

-

34

Û

history. You

cannot retrieve previous entries while in

STAT

mode.

Error Messages

Refer to Appendix C for a listing of the error

messages.

Last Answer (Ans)

The most recently calculated result is

stored to the variable

Ans

.

Ans

is retained

in memory, even after the TI

-

34

Û

is turned

off. To recall the value of

Ans

:

•

Press

%i

(

Ans

displays on the

screen), or

•

Press any operation key (

T

,

U

,

F

, and

so on) as the first part of an entry.

Ans

and the operator are both displayed.

Texas Instruments TI-34 II Teachers Guide - Page 5

About the TI - scientific calculator

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